Earthworm Jim - Samples play at the wrong pitch

[BlastBrothers]

Every audio sample in the game plays too slowly. Noticeable as soon as the Sega logo.

Couldn't find a real hardware video, but this emulator capture seems about right: Video

This also affects Earthworm Jim 2, and probably other GEMS games?

[RealMalachi]

Ah I see this was already reported a while back
GEMS times sample playback using YM Timer A, a built-in timer that the YM2612 has, which I presume is being emulated slower then intended. Naturally, this makes the samples play back slower. XGM2 and all of Siks sound drivers also relies on it for the same reason, which is how I initially learned of this issue.

Other known effected games; voice samples help a lot with things like these:

• Comix Zone (GEMS-custom)
• Mortal Kombat 3 (GEMS-custom)
• Arkagis Revolution (Echo) - this game has pretty lengthy voice acting.
• Akira Prototype (GEMS?)
• Toy Story (GEMS) - excluding the .MOD player

[Clownacy]

That helps a lot, thank you. I did recently notice that the timers are handled in a really goofy way in this emulator, so fixing that could be what finally fixes this issue!

[Clownacy]

0769d1b fixes the samples on the Sega screen, and I presume the rest of the game. Please reopen this if the problem persists.